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Thermostat Housing

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Old Jul 1, 2013 | 09:18 PM
  #1  
rwstegne's Avatar
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From: Raleigh
Car: 1989 Iroc Z 5.7L
Engine: 5.7L
Transmission: T56
Axle/Gears: built 4.10s
Thermostat Housing

Ok, I have a rookie question. My thernostat housing is really pitted up where the upper hose clamps on. Is it reusable or do I need a new one?
Attached Thumbnails Thermostat Housing-dsc01562.jpg   Thermostat Housing-dsc01565.jpg   Thermostat Housing-dsc01564.jpg  
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Old Jul 1, 2013 | 09:26 PM
  #2  
Tuned Performance's Avatar
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From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: Thermostat Housing

The scale will come off with steel wool. The pitting look marginal for sealing.

http://www.ebay.com/itm/ACDELCO-OE-SERVICE-15-1443-Thermostat-Housing-Water-Outlet-/140993460093?pt=Motors_Car_Truck_Parts_Accessories&hash=item20d3dd777d&vxp=mtr

Last edited by Tuned Performance; Jul 1, 2013 at 09:29 PM.
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Old Jul 1, 2013 | 09:43 PM
  #3  
rwstegne's Avatar
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From: Raleigh
Car: 1989 Iroc Z 5.7L
Engine: 5.7L
Transmission: T56
Axle/Gears: built 4.10s
Re: Thermostat Housing

I already hit is with a softer brass wire brush to clean it up. There is some pretty good pitting all the way around it. So it will not seal well, correct ?
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Old Jul 1, 2013 | 09:51 PM
  #4  
Tuned Performance's Avatar
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From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: Thermostat Housing

The pitting looks like it travels the complete length on the hose contact area. It looks like is a 50-50 chance on sealing. You can resurface the mating surface on a piece of glass and use 220 sand paper and use 100-150 around the neck to smooth out the pits but if you weigh your time vs $20 you might pop on the new one after a little time working on the old one alittle.
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Old Jul 2, 2013 | 07:17 AM
  #5  
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From: Paw Paw,MI
Car: 87 Trans Am
Engine: 305 TPI
Transmission: T56
Axle/Gears: 2.73
Re: Thermostat Housing

Honestly i would just get a new one hell you can get a chrome one for pretty cheap
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Old Jul 2, 2013 | 08:51 AM
  #6  
rwstegne's Avatar
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From: Raleigh
Car: 1989 Iroc Z 5.7L
Engine: 5.7L
Transmission: T56
Axle/Gears: built 4.10s
Re: Thermostat Housing

I am going to get a new one, just looking around now. Thanks for your help guys I appreciate it.
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Old Jul 2, 2013 | 02:02 PM
  #7  
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From: PHOENIX/ TOLLESON ARIZONA
Car: 90 IROC 5.7 1LE CLONE 89 GTA 88IROC
Engine: 5.7TPI / 5.7TPI/ 5.7TPI/ 4.3 CMFI
Transmission: 700R4 UPGRADED 700R4STOCK700R4STOCK
Axle/Gears: 3.23 10 BOLT 3.27 9 BOLT 2.77 9BOLT
Re: Thermostat Housing

CAREFUL WHEN U BUY ONE SOME TIMES AUTO BLOW WILL SELL U ONE THAT IS CLOCKED WRONG AND IT WONT FIT UNDER THE THROTTLE BODY IF YOU HAVE A TPI. MATCH IT TO THE ONE ON THE ENGINE BEFORE YOU BUY IT.
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Old Jul 3, 2013 | 05:43 PM
  #8  
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From: Watertown NY
Car: 1986 Trans Am
Engine: 350
Transmission: 700r4
Re: Thermostat Housing

I've gotten by wiping a little silicone gasket maker on pitted water necks in the past. Then slip the hose on. Make sure you clean it up real good so the silicone sticks.
A new housing would be best though if you can get one.
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Old Jul 3, 2013 | 06:01 PM
  #9  
rwstegne's Avatar
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From: Raleigh
Car: 1989 Iroc Z 5.7L
Engine: 5.7L
Transmission: T56
Axle/Gears: built 4.10s
Re: Thermostat Housing

Thanks, guys, I can tell you I looked at the one from Advance and it is a POS. For now I an planning on cleaning, sanding, and RTVing so I can reuse the existing one because not sure the quality of the stuff on-line. This way i can get the car running this week. I got to get it running for the 4th of July weekend. Nothing better then American Iron!!!!
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